[k8s]创建Kubernetes的ssl/tls用户

root@ubuntu-kubeadm-master:~# cd /etc/kubernetes/pki
root@ubuntu-kubeadm-master:/etc/kubernetes/pki# (umask 077; openssl genrsa -out kube-user1.key 2048)
Generating RSA private key, 2048 bit long modulus
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e is 65537 (0x010001)root@ubuntu-kubeadm-master:~#